WOODWARD 9908-1519

الوصف

The WOODWARD 9908-1519 is a specific configuration of a GS40 Gas Fuel Metering Valve. This valve is a crucial component designed for precise and reliable control of gaseous fuel flow to industrial gas turbines.

WOODWARD 9908-1519: GS40 Gas Fuel Metering Valve

The WOODWARD 9908-1519 plays a vital role in a turbine’s fuel system. It’s engineered to accurately meter and control the flow of gaseous fuel into the combustion chamber, which is essential for efficient, stable, and environmentally compliant turbine operation.

Product Overview

This particular part number represents a specific variant within Woodward’s robust GS40 series of gas fuel metering valves. The GS40 valves are known for their durability and ability to handle various types of gaseous fuels, including those that may contain contaminants. They are well-suited for a range of industrial gas turbine applications.

• Product Type: Gas Fuel Metering Valve
• Manufacturer: Woodward
• Part Number: 9908-1519
• Model Designation: GS40
• Key Specifications (based on Woodward’s product catalog and typical GS40 configurations):
  • Port Size / Active Area (ACD): For the GS40 series, common active areas are 0.30 in² (193.5 mm²) and 0.75 in² (483.9 mm²). The specific part number 9908-1519 is associated with the 0.30 in² (193.5 mm²) active area.
  • Flange Type: Likely ANSI 600# RF Flange (Raised Face 600 Class), a common robust industrial piping connection.
  • Body Material: Typically Stainless Steel (SST), which provides excellent corrosion resistance.
  • Input Voltage: Often 125 VDC for GS40 models with conduit connections.
  • Connections: Conduit Entry Driver, meaning the electrical wiring enters via a conduit connection.
• Function: This electronically actuated valve, with its integrated on-board driver, precisely controls the flow of gaseous fuel based on a command signal from a turbine control system (such as a Woodward MicroNet or NetCon controller). This precise control ensures optimal fuel delivery for all operating conditions, including start-up, acceleration, load changes, and steady-state operation, and helps in achieving desired power output and emissions compliance.

Detailed Product Description

The Woodward 9908-1519 GS40 Gas Fuel Metering Valve is engineered for high performance and exceptional reliability in demanding gas turbine applications. Key features common to the GS series that apply to this model include:

• Electronically Actuated with On-Board Driver: The valve incorporates an integrated electronic driver/positioner controller. This enables precise and rapid positioning of the internal metering element in response to the control system’s command signal, ensuring accurate fuel delivery and dynamic response. This integration also streamlines system packaging.
• Self-Cleaning, Shear-Type Metering Action: A hallmark of the GS series, this unique design actively cleans the metering port. This prevents performance degradation from deposits of gas condensates, contaminants, or system debris, which is a significant advantage, especially when dealing with “sour gas” or other fuels that may contain impurities. This feature extends service intervals and enhances reliability.
• Single Moving Part Design: Many GS series valves, including the GS40, feature a design where the fuel-metering element, actuator rotor, and often a position feedback resolver are mounted on a single, solid shaft. This design minimizes the number of wear parts, greatly enhancing reliability and longevity by eliminating backlash and providing high-resolution positioning.
• Robust Stainless Steel Construction: The use of stainless steel (SST) for the body and internal components provides superior corrosion resistance and durability, making it suitable for a wider range of fuel types and harsh operating environments.
• Precision and Repeatability: By utilizing a spherical fuel metering element with a precision-machined port and high-precision resolvers for position feedback, the valve achieves highly accurate and repeatable fuel flow control. This is vital for maintaining turbine speed, power output, and meeting emissions regulations.
• Fail-Safe Operation: The valve typically includes an integral failsafe spring, ensuring it returns to a safe (closed) position upon loss of power or a shutdown command, maximizing reliability and safety.

Technical Specifications (for the 9908-1519 GS40)

Typical Applications

The WOODWARD 9908-1519 GS40 Gas Fuel Metering Valve is commonly found in a variety of high-performance industrial applications where precise gas fuel control is critical:

• Gas Turbine Power Generation: Controlling fuel flow to gas turbines used for electricity generation in utility and independent power producer plants.
• Oil & Gas Industry: On gas turbines driving compressors or pumps in pipeline applications, processing plants, and offshore platforms.
• Industrial Cogeneration Plants: Where gas turbines are utilized for combined heat and power generation.
• Applications with Contaminated or Corrosive Gas Fuel: Its self-cleaning design and stainless steel construction make it particularly well-suited for environments with “sour gas” or other fuels containing impurities or corrosive elements.